Explore the universe with news on fascinating discoveries, scientific advancements and more. Mars may have once hosted an ocean with waves that lapped against sandy beaches 3.6 billion years ago, ...

"We found evidence for wind, waves, no shortage of sand—a proper, vacation-style beach," said geologist Benjamin Cardenas.

SpaceX CEO Elon Musk recently announced the company's Starship rocket would embark on a journey to Mars at the end of 2026.

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. Mars may have once ...

Step aside, Santa Monica. It seems that Mars once had beaches that would give the Californian coast a run for its money.

Mars – dusty, dry, and desert-clad – was once so rich in water it had not just lakes, but oceans, according to a new study. Observations using ground-penetrating radar have revealed underground ...

A hypothetical picture of Mars 3.6 billion years ago, when an ocean may have covered nearly half the planet. The blue areas show the depth of the ocean filled to the shoreline level of the ancient ...

If Mars ever hosted microorganisms in its bygone oceans, their fossils might still be preserved in minerals—and now, we have ...

A team of Chinese and foreign scientists has discovered underground sedimentary layers on Mars that appear to have been ...

More than 3 billion years ago, Mars intermittently had liquid water on its surface. After the planet lost much of its ...

A study using radar data from China's now-dead Zhurong rover finds strong evidence that Mars had a stable ocean in the ancient past. Credit: Victor Habbick Visions / Science Photo Library / Getty ...